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UPSTREAM: MIPS: CM: WARN on attempt to lock invalid VP, not BUG

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Rather than using BUG_ON in the case of an invalid attempt to lock
access to a non-zero VP on a pre-CM3 system, use WARN_ON so that we have
even the slightest chance of recovery.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16194/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 2f93a60c3d)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Paul Burton
2017-06-02 14:48:51 -07:00
committed by Amit Pundir
parent 28cf752ffc
commit e9b3cd7df3
1 changed files with 1 additions and 1 deletions
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2
arch/mips/kernel/mips-cm.c
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@@ -282,7 +282,7 @@ void mips_cm_lock_other(unsigned int core, unsigned int vp)
spin_lock_irqsave(this_cpu_ptr(&cm_core_lock),
*this_cpu_ptr(&cm_core_lock_flags));
} else {
BUG_ON(vp != 0);
WARN_ON(vp != 0);
/*
* We only have a GCR_CL_OTHER per core in systems with